<form name="billMoney" id="billMoney" method="post" action="?addbill&billtype">
    <p>Does this responsibility involve money?
    <select name="billType">
        <option value="bill">Yes</option>
        <option value="chore">No</option>
    </select>
    <input type="submit" value="Continue">
    </p>
</form>